Internal-combustion engine



March 15,1927. 20,936

A. J. BAKER INTERNAL COMBUSTION ENGINE Filed Dec. 17, 1923 '2 Sheets-Sheet 1 INVENTOR. nzhur J Baker H Z BY March 15,1927. 1,620,936

A. J. BAKER 1 V INTERNAL COMBUSTION ENGINE Filed Dec. 17, 1923 2 Sheets-Sheet 2 "Ill 4 IN VEN TOR.

Arthur J, Baker is mounted opposite the connecting rod pins andextended below the cylinder a considerable distance in order to take the lateral thrust on the inner sleeve produced by the connecting rods of either sleeve, or by the movement of the piston when nearing the end of its downward stroke. The bearing is made removable so that should it become excessively worn, it can be readily taken out and replaced by a new one. It is preferably constructed to occupy somethingless than half the space produced by the cutting away of the outer sleeve in the manner shown.

.Both the inner and outer sleeves are preferably additionally lightened through the removal of a considerable portion of the material, by the drilling or otherwise forming of a series of holes 28 and 29 therein, as shown in Fig. I.

Oil grooves 30 and 31 are formed within the outer and inner lower sleeve portions respectively, as shown in Fig. I, and one or more diagonally arranged oil grooves 32 are provided within the valve portion 13 of a the outer sleeve.

I/Vhile I have shown in considerable detail, a specific embodiment of my invention,

it is to be understood that this showing and descripiton are illustrative only, and that I do not regard the invention as limited to per end and having a reduced extension projecting downwardly within the cylinder, said extension being of a length as great as the length of the encircling portion, a bearing member for said inner sleeve fixed to said cylinder diametrically opposite to said outer sleeve extension, and driving means operatively connected with said inner sleeve and with the extension of the outer sleeve.

2. (In an internal combustion engine, a cylinder, inner and outer sleeve valves therein, the latter encircling the former at its upper end and having a reduced extension projecting downwardly within the cylinder and through the lower end thereof,;said extension being of a length at least as great as the length of the encircling portion, a piston operable within the valves, a member fixed to said cylinder below said outer, sleeve encircling portion and contacting with the inner sleeve, and driving means operatively connected with said piston and valves.

3. In an internal combustion engine, a cylinder, inner and outer sleeve valves therein,

the latter encircling the former at its upper end and having an extension within the cylinder of less cross-sectional area than said encircling portion, said extension forming with said cylinder an arcuate space therebetween, a member within said space fixed to said cylinder and contacting with said inner sleeve, said member being adapted to permit movement of both'of said sleeves, and driving means operatively connected to the valves.

4-. In an internal combustion engine, a cylinder, inner and outer sleeve valves therein, the outer one of which is cut away at points within the cylinder to lessen weight and reduce the frictional resistance caused by the sliding of thesleeves upon eachother, a bearing member between the inner sleeve and the cylinder, having less surface area than said cut-away portion, and driving means operatively connected with said valves.

5. In an internal combustion engine, a cylinder, inner and outer sleeve valves therein, the outer sleeve being cut away at points within the cylinder to reduce the frictional resistance caused by the sliding of the sleeves upon each other, a bearing member between the inner sleeve and the cylinder, means for removably securing said bearing member in position, and driving means operatively connected. with said sleeve,

6. In an internal combustion engine, a

cylinder, inner andouter sleeve valves therein, the latter being cut away for a portion of its length within the cylinder, abearing 1 between the cylinder andv inner sleeve upon which the latter is adapted to slide,.and'driving means operatively connected with said sleeves, x v

. 7. In an internal combustion engine, a cylinder, inner and outer sleeve valves therein, the latter encircling the former at its upper end and having a downwardly projecting extension of less cross-sectional area than said encircling portion, a bearing member positioned below said encircling sleeve portion and between the cylinder and the inner sleeve, and driving means operatively connected with said sleeves. v

8. In an internal combustion engine, a cylinder, a piston therein, a sleeve valve between the cylinder and piston having an upper circular portion and a lower cut away portion of less than circular extent, and a fixed abutment having an inner bearing surface of the same cylindrical contour as the inner side of said sleeve, said fixed abutment occupying part of the space left free by said cut-away portion. 1

9. In an internal combustion engine, a cylinder, inner and outer sleeve valves therein projecting below the bottom of the cylinder and each having an operating arm thereon, one of sald sleeves havmg its wall cut away for a considerable portion of its length above the bottom of the cylinder, and driving means operatively connected with said arms. v v i 10. In an internal combustion engine, a

cylinder, a piston therein, inner and outer sleeve valves between the piston and cylinder, one encircling the piston for a portion of its length and having a reduced extension for the remaining andgreater portion of its length Within the cylinder, means fixed to said cylinder for supporting the lower portion of said inner sleeve in movable relation to sald cylinder and drivlng means operatively connected with said piston and said i valves. i

'11. In an internal combustion engine, a'

cylinder, inner. and outersleeve valves therein, the latter having a reduced extension for ed to fill a portion of said space', and driving means operatively connected with said piston and said sleeves,

In testimony whereof, I affix my signature.

' ARTHUR J. BAKER. 

